After recent changes allowing ThreadItems to have IDs, they can now
also have warnings about duplicate IDs.
Bug: T267035
Change-Id: If3edfe34e6e29741e29fac8946a3c88badc4ab7f
Our threads now also contain all replies to their sub-threads.
This is similar to how sections work in MediaWiki, where the parent
section also contains the content of all the lower-level sections.
We're going to need this for notifications about replies in a thread.
Bug: T264478
Change-Id: I241fc58e2088a7555942824b0f184ed21e3a8b6f
Previously, only comments could have IDs, because we only needed IDs
for replying. But we might also use them for notifications soon.
Bug: T264478
Change-Id: I1bcad02bf17ab54bc5028a959543c10f0430836b
* Pass rootNode to the constructor
* Rename getters to match CommentItem/HeadingItem/ThreadItem
value classes.
* Always build the thread tree so CommentItem's always have
and ID and replies/parent.
Change-Id: I508be9534de59016ff806e3d84edcbb1c76cb0c6
